Watch list

Differential pressure transmitter

P 34


Differential pressure transmitter for control cabinet installation, for P-/T-compensated volume flow

Also for volume flow measurement, see this chapter:
Measuring volume flow


Differential pressure transmitter with very small dimensions – ideal for control cabinet installation

Special features

  • Measurement of differential pressure, volume flow or P-/T-compensated volume flow (optional) possible
  • Volume flow can be configured via k-factor, dPmax/Vmax or 20 individual values
  • Scaling, characteristic line form and many other parameters can be set via PC-software (optional)
  • With USB interface
  • 2 floating switching relays (optional)
  • Output signal can be configured 0 .. 10 V or 0/4 .. 20 mA
  • Highly stable measurements thanks to cyclical self-calibration of the zero point
  • Can be calibrated
  • Suitable for top-hat rail mounting in control cabinets
  • Delivery possible already completely integrated into the control cabinet (on request)

The P 34 differential pressure transmitter is designed for pressure monitoring applications in cleanrooms, laboratories, pharmaceutical plants and operating theatres as well as for special uses in machine and plant construction. As well as measuring the differential pressure, the instrument also records positive and negative overpressures as well as flow rates or volumetric flows.
The measuring range is scalable in the range from 10 .. 100 %. Two optional contact points allow the user to connect visual or audible alarms that are triggered any time values rise above or fall below specified limits. The transmitter can be configured easily via an USB interface (optional) with software. A selectable time constant allows the transmitter to be adjusted perfectly to the pressure conditions and thus ensures a stable output signal. The P 34 can be mounted on top-hat rails.

Measurement ranges
10 / 50 / 100 / 250 / 500 Pa
1 / 2,5 / 5 / 10 / 20 / 50 / 100 kPa
freely scalable from 10 .. 100 % within a measurement range
(others available on request)
Optionally also for the measurement of P-/T-compensated volume flow

Margin of error (0.3 Pa margin of error for the reference)
± 0,2 % or ± 0,5 % FS (for measurement ranges ≤ 50 kPa)

Output (rad. / lin.)
0 .. 10 V (RL ≥ 2 kΩ)
0 .. 20 mA (RL≤ 500 Ω)
4 .. 20 mA (RL≤ 500 Ω)
(output signals can be configured freely)

Power supply
24 VAC/DC, ± 10 %

Tubing connectors
standard grommet for NW 4..6 mm tubing
threaded elbow connector for 6 mm tubing

USB 2.0 Full-Speed Slave (Mini USB)

The instrument is available with an ISO factory calibration or DAkkS-accredited calibration certificate (optional).

Delivery possible already completely integrated into the control cabinet (on request).